A comprehensive test program has been running within the CSO organisation to establish the feasibility of using reeled pipe technology as an installation method for dynamic rigid riser systems. A scope of work was developed by CSO in conjunction with The Welding Institute of Cambridge, England to design and test line pipe girth welds under fatigue conditions. The object of the test program was firstly to provide a comparison mechanism between girth welds in the virgin condition and girth welds that had been subjected to a simulated reeling process. Secondly, to establish data points for an S-N curve, thereby providing a basis for the development of design criteria that could be applied to rigid riser systems installed by the reeled pipe technique. The test results have illustrated that no significant detrimental effect on the fatigue performance of line pipe girth welds can been detected providing the prescriptive weld procedures are adhered to.
Reeled pipe for dynamic riser applications
1999
12 Seiten, 1 Quelle
Aufsatz (Konferenz)
Englisch
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